raze-gles/libraries/zmusic/musicformats/music_cd.cpp

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2019-11-10 22:58:51 +00:00
/*
** music_cd.cpp
**
**---------------------------------------------------------------------------
** Copyright 1999-2003 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#include "zmusic/zmusic.h"
#include "zmusic/musinfo.h"
#ifdef _WIN32
#include "zmusic/m_swap.h"
#include "win32/i_cd.h"
// CD track/disk played through the multimedia system -----------------------
class CDSong : public MusInfo
{
public:
CDSong(int track, int id);
~CDSong();
void Play(bool looping, int subsong);
void Pause();
void Resume();
void Stop();
bool IsPlaying();
bool IsValid() const { return m_Inited; }
protected:
CDSong() : m_Inited(false) {}
int m_Track;
bool m_Inited;
};
// CD track on a specific disk played through the multimedia system ---------
class CDDAFile : public CDSong
{
public:
CDDAFile(MusicIO::FileInterface* reader);
};
void CDSong::Play (bool looping, int subsong)
{
m_Status = STATE_Stopped;
m_Looping = looping;
if (m_Track != 0 ? CD_Play (m_Track, looping) : CD_PlayCD (looping))
{
m_Status = STATE_Playing;
}
}
void CDSong::Pause ()
{
if (m_Status == STATE_Playing)
{
CD_Pause ();
m_Status = STATE_Paused;
}
}
void CDSong::Resume ()
{
if (m_Status == STATE_Paused)
{
if (CD_Resume ())
m_Status = STATE_Playing;
}
}
void CDSong::Stop ()
{
if (m_Status != STATE_Stopped)
{
m_Status = STATE_Stopped;
CD_Stop ();
}
}
CDSong::~CDSong ()
{
Stop ();
m_Inited = false;
}
CDSong::CDSong (int track, int id)
{
bool success;
m_Inited = false;
if (id != 0)
{
success = CD_InitID (id);
}
else
{
success = CD_Init (-1);
}
if (success && (track == 0 || CD_CheckTrack (track)))
{
m_Inited = true;
m_Track = track;
}
}
bool CDSong::IsPlaying ()
{
if (m_Status == STATE_Playing)
{
if (CD_GetMode () != CDMode_Play)
{
Stop ();
}
}
return m_Status != STATE_Stopped;
}
CDDAFile::CDDAFile (MusicIO::FileInterface* reader)
: CDSong ()
{
uint32_t chunk;
uint16_t track;
uint32_t discid;
auto endpos = reader->tell() + reader->filelength() - 8;
// ZMusic_OpenSong already identified this as a CDDA file, so we
// just need to check the contents we're interested in.
reader->seek(12, SEEK_CUR);
while (reader->tell() < endpos)
{
reader->read(&chunk, 4);
if (chunk != (('f')|(('m')<<8)|(('t')<<16)|((' ')<<24)))
{
reader->read(&chunk, 4);
reader->seek(LittleLong(chunk), SEEK_CUR);
}
else
{
reader->seek(6, SEEK_CUR);
reader->read(&track, 2);
reader->read(&discid, 4);
if (CD_InitID (LittleLong(discid)) && CD_CheckTrack (LittleShort(track)))
{
m_Inited = true;
m_Track = track;
}
return;
}
}
}
MusInfo* CD_OpenSong(int track, int id)
{
return new CDSong(track, id);
}
MusInfo* CDDA_OpenSong(MusicIO::FileInterface* reader)
{
return new CDDAFile(reader);
}
#else
MusInfo* CD_OpenSong(int track, int id)
{
return nullptr;
}
MusInfo* CDDA_OpenSong(MusicIO::FileInterface* reader)
{
return nullptr;
}
#endif